The monument appears on that early map sitting within a small woodland plantation, with sand and gravel quarries close by on either side, one about ten metres to the north-east and another immediately to the south-east. When the same area was surveyed again for the 1899 to 1903 revision, the plantation was still marked, but the enclosure itself was gone from the map entirely.

Circular enclosures of this kind are a broad category in the Irish landscape, encompassing everything from prehistoric ring-ditches to early medieval ringforts, which were typically the enclosed farmsteads of farming families. What happened to the Sheastown example between those two surveys is not recorded. The proximity of active quarrying on at least two sides raises the obvious possibility that extraction work altered the ground considerably in the intervening years, though whether the monument was damaged, obscured, or simply overlooked by the later surveyors is an open question. The 1839 map is itself a significant document: the first systematic large-scale survey of Ireland, and one of the earliest attempts to record earthworks of this kind alongside natural and built features in a consistent national framework. That the enclosure appears on it at all is something; that it disappeared before the century was out is quietly telling.